But there is a mystery fourth player who NBA execs and scouts talk about when discussing candidates for the No. 1 overall pick. That's Australia's Dante Exum.

Here are some frequently asked questions on Exum:

1. There was talk Exum was going to attend college. Is he going to be in the draft?

On Tuesday morning, Exum announced his intention to declare for the 2014 NBA draft and hire agents Rob Pelinka and Brandon Rosenthal of Landmark Sports. Exum's decision to sign with an agent ends his college eligibility. Exum did consider going to college last year and looked at several high-profile programs, including Indiana and North Carolina. However, once his stock rose to the point where he was in the running for a top-five pick, the decision to enter the draft was pretty clear.

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